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14 Mobile Contract Tips

How and where to find the best contracts before committing

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Nick | Edited by Steve N

Updated December 2017

mobile contract

Many have only ever bought a mobile phone on a traditional contract – where you pay monthly, and the cost of the handset is bundled in with minutes, texts and data. Sadly, this is rarely the cheapest option – though they offer a low upfront cost and some can be cracking value, if you know what you're doing.

This guide is here to help you navigate the sticky world of mobile phone contracts, including how to choose the right tariff, where to find the best deals and tips for making the process go smoothly.

Contracts usually aren't the cheapest way

inflated costs

Traditional mobile contracts – deals that bundle in the cost of a handset with the monthly payment for service – are the default way many pay for their phone. But sadly, the cost of these is often massively inflated. In fact, when we crunched the numbers in May 2016, we found in some cases it was cheaper to get a 30% APR loan than a handset on a contract.

So if you want a new phone, consider carefully whether a contract's really right for you. In most cases you're better off buying the phone yourself and pairing it with a cheap Sim-only or PAYG deal (where you just pay for your allowance). Many shy away from forking out £100s upfront, but it's possible to get specific mobile financing – this can often undercut buying via a contract, and in some cases is at 0%.

For your options in full and the pros and cons, see Buying a New Handset. But if you're dead set on a contract, there are some good deals out there – read on.

If you pay for your mobile on a contract and you're outside your minimum term, STOP! You're effectively paying for a handset you've already bought.

Once your contract's up, then you've a choice. If you're happy with your existing handset, you can switch to a cheap Sim-only deal or a pay-as-you-go tariff, or haggle for a better deal. Either way, you should be able to slash your monthly bill.

Use a tool to work out what allowance you need

Don't be sold on overly generous allowances that you'll never use. Do you really need unlimited minutes or 6GB of data? Most don't use anywhere near that – check your actual past usage with an online tool.

There are two sites accredited by regulator Ofcom that will analyse your bills from the last three months to determine your average usage and suggest deals based on this.

  • Billmonitor* works with customers of EE, O2, Tesco Mobile, Three and Vodafone. It's not super user-friendly, but it provides detailed bill analysis. (While its analysis tool is handy, beware signing up for a new contract via the site - if you do you'll be charged 30% of the money you save.)
  • Ctrlio will handily remind you when better deals at your usage become available (either monthly or just at the end of your contract). Currently it can read the bills of EE, Giffgaff, O2, Tesco Mobile, Three, TPO, Virgin Mobile, Vodafone. It's completely free to use.

Ctrlio is also one of our top pick comparison sites, for when you're ready to locate the best deal.

Don't fall for the hard sell in-store – scour the top deals with a comparison site

Mobile tariffs are fiendishly difficult to compare, what with the combination of varying upfront and monthly costs, different allowances and the wide range of handsets to choose from.

Never feel pressured into signing a contract by pushy salespeople – do your research online first. The easiest way is to use a comparison site. These list a wide range of deals both direct from the networks, and from resellers (middlemen who sell on networks' plans at reduced rates, such as Carphone Warehouse).

Check comparison sites in the following order (and if you have time, check 'em all):

  1. The most comprehensive comparison site is MobilePhoneChecker*. It lets you filter by upfront and monthly cost, allowance, network (including most piggybackers) and even cashback type.

  2. Ctrlio also covers deals that include cashback, though doesn't show this in its calculations, which is less useful. It also doesn't have as many filters, but sometimes throws up the best tariffs.

  3. It's also worth checking uSwitch* and MoneySupermarket*, as they occasionally run exclusive deals and sometimes offer slightly different tariffs from resellers. HandsetExpert is also a useful site.

  4. Occasionally the reseller sites may offer slightly different tariffs not available elsewhere, so if you want to be really thorough it's worth checking these too.

Avoid the upgrade trap – do your homework

inflated costs

As your mobile phone contract comes to the end of its minimum term, you'll usually be hounded by your provider, who'll try every trick in the book to get you to upgrade to a new handset – and lock in to a new tariff to pay for it.

It's easy to be lured by the promise of a 'great deal', free of the 'hassle' involved in finding a new contract and switching network. The sad fact is though that for most, you'll be paying over the odds if you fall into this trap. Instead, you're better off seeing what else is out there.

That's not to say you can't get a competitive offer out of your current network though, particularly if you're happy to stick with your existing handset. Swot up on the best rival deals out there using a comparison site and then get haggling.

Do you really need the latest handset?

Latest handsets

If you're choosing a new handset, don't be sucked in by the hype. There are lots of options out there other than the (very pricey) latest iPhone or Samsung.

If you do want an iPhone or Samsung, consider going for an older iteration – these tend to go for much less. You can see a round-up of the specs of popular iPhone and Samsung handsets in our guides, including the previous years' models. Or consider another make entirely – carry out your own research using review sites like CNET, which has an in-depth phone buying guide.

It's also worth considering a refurbished model. These are often handsets that have been returned by customers and have been put back into full working order, often by the manufacturer, but sell for a good chunk less than brand new ones. See full info and top picks in the Buying a refurbished mobile guide.

And if you're thinking about upgrading because your phone is full and you want one with more storage, think again. There are a number of simple things you can do to save GBs of space on your device, from taking advantage of apps that offer unlimited storage to seeking out and deleting hidden downloads that are hogging your RAM. For full details, see our How to increase phone storage guide.

Prices on many tariffs can rise each year – even mid-contract

Mobile networks are permitted to increase your monthly tariff price by up to the rate of inflation each year, but only if their T&Cs state so before you sign up. Sadly all the major networks bar Tesco Mobile have such terms – EE, O2, Three, Virgin Mobile and Vodafone.

Changes are made in accordance with the Retail Prices Index (a measure of inflation) in February/March each year, though occasionally some firms will choose not to exercise this right. See Inflationary Costs Help for more.

If a provider hikes your monthly bill by more than RPI though – or hikes it at all if its T&Cs don't allow it – then you can leave your contract penalty-free.

Make a note to call when your contract ends

inflated costs

Because they bundle in a handset, mobile contracts typically have high monthly costs going up to as much as £50 or £60 a month. Yet once you reach your 'minimum term' (the end of your contract) the payments don't necessarily stop automatically – you may find the contract rolls over and you're effectively paying again for a phone you already own.

Even though you're free to leave your contract or switch to a cheap Sim-only deal at that point, in many cases unless you call to let your network know you want to do this, you'll keep getting charged.

So as soon as you sign up, diarise to do this one month before the contract ends (you still have to give 30 days' notice even if you're out of contract), to make sure you're not paying the high monthly cost for any longer than necessary.

You'll be credit-checked

Given the high value of smartphones and the fact that a contract is effectively a loan over two years, all providers will carry out a credit check if you're taking out a mobile contract. So if you tend to struggle getting credit you may want to check your credit score before applying.

The free Credit Club offers a brand new way to keep track of your credit record. While it won't tell you whether or not you'll pass a credit check for a contract, it will give you a general idea of how a network might view you when applying for one.

If you think you're unlikely to pass a credit-check – or tried and were declined – your best bet is to get a pay-as-you-go deal for your service, as most Sim-only deals also tend to be credit-checked.

Some deals are for 'new customers' only

Some particularly strong promo contract deals may not be available to existing customers of the network, even if you're outside your minimum contract term.

Of course, you can always call up and ask them to match it, so this should be your first port of call (see our Mobile Phone Haggling guide for help on this).

If they won't play ball, then you may not technically be able to get the deal. However in many cases there's a way round this – you can temporarily port your number to a different network, then come back to your previous network as a 'new customer'. It's not as complicated as it sounds – see the number porting trick for details.

You may be able to save more with cashback – but watch out for the catch...

It's possible to nab extra savings through cashback on some deals, though never think of this as guaranteed. There are three types of cashback available, and they all work a little differently:

  1. Redemption cashback. The biggest discounts are on 'cashback redemption' deals through reseller sites. These require you to send off your bills at several points throughout your contract and get paid in instalments – miss one and you'll lose out. See more on how to beat the cashback trap.

  2. Automatic cashback. These deals, also via resellers, are where you're sent a cheque automatically within a few months without having to claim, though usually don't offer as big a discount. Some deals can also be part manual, part automatic cashback.

  3. Cashback via cashback sites. It's possible to sometimes beat the deals above with some powerhouse offers via dedicated cashback websites. However, don't think of this type of cashback as guaranteed – there are often problems. Read the Top Cashback Sites guide for full info.

Usefully, the comparison site MobilePhoneChecker lets you filter deals by whether they offer redemption or automatic cashback (or neither), though you'll have to check third party cashback sites yourself.

Operators have different coverage – check signal where you live/work


You can get an idea of signal strength in a particular area with Ofcom's mobile and broadband checker.

This'll show you results for one of the four main networks – EE, O2, Three and Vodafone. But don't think your options are limited to one of the biggies – 'piggyback' networks use the signal of of one of the big four, eg, Tesco Mobile uses O2's signal. See a full list of which provider is on which network in our 'Piggybacking' guide.

For a more accurate indication than Ofcom's checker can give you, it may be worth picking up a free pay-as-you-go Sim from the network you're considering, topping it up with a bit of credit and putting it to the test before committing.

Take your old number with you

port number

If you want to take your number to your new deal you should be given your PAC by your current provider when you hand in your notice. If you aren't, as long as your existing contract hasn't been terminated, you should be able to call and get it.

Though the process varies by provider, once you've got your new (temporary) number from your new network you'll then need to fill in an online form. See full provider-by-provider help.

The switch usually takes place the next working day after submitting your PAC.

If you're switching to a new tariff on the SAME network, you shouldn't need to carry out this process – simply call customer services and they should be able to sort it.

Moving from another contract? Hand your notice in ASAP

inflated costs

Most contracts require at least 30 days' notice for you to cancel, meaning that you'll have to pay for this many days as a minimum once you tell your provider you're leaving. Plans roll over at the price you're currently paying, and if yours came with a handset this could be £50+/month – you don't want to be paying that any longer than necessary.

The first thing to do before even looking for a new deal is to call up a month before your minimum term is up and get a PAC (port authorisation code) to keep your number. Use those 30 days to find yourself a new deal while running down the clock.

If you change your mind you can always tell your network that you've decided to stay – plus it's more likely to get in touch with a better deal once it thinks you're serious about leaving.

How to complain about your network

The mobile industry doesn't have the best customer service reputation and while a provider may be good for some, it can be hell for others. Common problems include limited network coverage, slow data speeds, unexpected charges and more. It's always worth trying to call your provider first, but if not then…

Free tool if you're having a problem

This tool helps you draft your complaint and manage it too. It's totally free, and offered by a firm called Resolver which we like so much we work with to help people get complaints justice.

If the complaint isn't resolved, Resolver will escalate it to the free Ombudsman Services (or CISAS if you're complaining about Virgin Mobile).

Important: if your issue is about a voucher or incentive that was part of an MSE Blagged deal, then instead let us know by emailing as that's usually quicker.

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